کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8180876 | 1526430 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of humidity on the photoemission properties and surface morphology of cesium iodide photocathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We report on the photoemission properties of 500Â nm thick CsI films photocathodes. The surface morphology and electron diffraction pattern of 500Â nm thick “as-deposited” CsI and further “aged” CsI by exposing it to the humid air were investigated by means of transmission electron microscopy. It is observed that photoemission properties are degraded after long term exposure in humid air however there is no change in the film polycrystalline structure. After a 24Â h exposure to humid air, the average grain size of CsI films is increased by a factor of three.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 695, 11 December 2012, Pages 279-282
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 695, 11 December 2012, Pages 279-282
نویسندگان
Triloki Triloki, B. Dutta, B.K. Singh,